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2 Sheets-Sheet 1.

(No Model.)

W. HALKYARD.

` MAGH'INE POR MAKING STAPLES.

No. 405,090. Pate'ntedJl'lne 11,1889.

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W. HALKYARD. MACHINE FOR MAKING SIZAPLBS.`

No. 405,090. Patented'June 11 1889.

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NITED STATES PATENT OEEICE.

VILLIAM HALKYARD, OF PROVIDENCE, RHODE ISLAND.

MACHINE FOR MAKING STAPLES.

SPECIFICATION forming part of Letters Patent No. 405,090, dated J' une11,1889.

Application led October 9, 1888. @Serial No. 287,656. (No model.)

To all wwm it may concern.-

Be it known that I, WILLIAM HALKYARD, of Providence, in the county ofProvidence and State of Rhode Island, have invented certain new anduseful Improvements in Machines for Making Staples, of which thefollowing is a full, clear, and exact description, reference being hadto the accompanying drawings, forming part of this specification.

This invention has reference to an improve- Ament in a power-machineadapted to make continuously and automatically a peculiar` staple usedfor securing together the edges of leather.

The invention consists in the peculiar and novel construction of themachine by which the out blank is swaged so as to point the legs of thestaple and draw the head and legs into their proper relative positionsto form the complete staple, as more fully described hereinafter.

Figure 1 is an elevation showing a front view of the machine. view ofthe machine through the line a b of Fig. 1, showing the feed mechanismby which the ribbon-blank is fed to the cutter. Fig. 3 is a view of thecutter-die and the reciprocating carrier. Fig. 4 is an enlarged viewshowing the crank-connection of the cutter with the driving-shaft. Fig.5 is a view showing the connection of the swaging-plunger with thedriving-shaft. Fig. 6 is a view showing the double cam for actuating thedischargeplunger. Fig. 7 is a view of the blank from which the staple ismade. S is a view of the finished staple. Fig. 9 is a view, partly insection, of the swaging-die, showing the nut for adjusting the die. Thelower end of bthe plunger is shown in broken lines.

In the drawings similar letters of reference designate correspondingparts throughout. y

The object of this invention is to produce a machine by which staplesare made having pointed and tapering prongs which will readily pierceleather or other material, the points of which will readily bend toclinch the staple, as is more fully described hereinafter.

In the drawings, 1() indicates the head of the staple. This head isformed convex on the outside and concave on the inside of the staple.

Fig. 2 is a sectionall 11 11 indicate the prongs of the staple. Theseprongs are made tapering to a point on their flat sides as well as inthe thickness of the blank or sheet metal. By reason of this taper ofthe prongs the staples can be driven through leather or other similarmaterial without injuring the material and will tightly close theopening made in passing through the same. The thin pointed ends of theprongs can be readily turned both inward to clinch the same withoutbending the prongs. In leather-work this is important, as the bending ofthe prong will open a space between the prong and the leather, and thusproduce a leak.

The machine consists of the bed 12, provided with the standards 13, nearthe upper ends of which the journal-bearings 14 for the driving-shaft 15are placed. The drivingshaft 15 is provided with the loose and tightpulleys 16 for driving the machine by means of a driving-belt. On thedriving-shaft 15 is secured or formed the eccentric 17. The forked lever1S bears against the upper and lower face of the eccentric 17. The arm19 extends rearward and is provided with a slot, in which theconnecting-rod 2O is adjustably secured. The lower end of theconnectingrod is connected with a pawl-lever, which operates thefeed-rollers 21 by means of the ordinary pawl-and-ratchet device.

The stock, in the form of a ribbon of sheet metal 23, is wound on thespool 22, and is fed to the machine by the feed-rolls 21, operated bythe eccentric through the forked lever 18, arm 19, ccnnecting-rod 20,and the pawl-andratchet device.

On the driving-shaft 15, close to the eccentric 17, is the crank 24, towhich the link 25 is journaled. The lower end of the link 25 is securedby a hinged pin to the reciprocating plunger 2G, as shown enlarged inFig. Ll. The plunger 26 reciprocates in the slides 27 and carries in itslower end the cutter 2S.

29 indicates the plate through which the stock 23 passes horizontallyand the cutter vertically. Y l

The cutter 28 is provided with a raised convex dome, so that the blankshown in Fig. 7 is cut with the head or central portion convex on theunder side. This convex part of IOO the blank, when cut, rests in thecircular hole in the carrier 30, which slides in the plate 2S)horizontally below and at right angles with the direction in which thestock 23 passes. The carrier is made of steel. The metal surrounding thehole is slightly beveled. In the process of swaging the prongs thecarrier 30 forms the lower die, as is shown in Fig. 9. Another crank 31on the drivin g-shaft 15 operates the plunger 32, being connected withthe same by the link To the lower end of the plunger 32 is secured theswaging-d'ie 34.

(Shown enlarged in Fig. 9.) This die is se-` cured in a cylindrical holein the end of the plunger. It is held by the clamp-screw 35,screw-threaded in the metal of the plunger and bearing against theflattened portion of the cylindrical upper end of the die, and isadjusted by the screwsnut 3G, which bearsA against the lower end of theplunger 32, so as to bear on the pointed ends 11 11 of the blank andforce the metal outward, and thus produce the tapering pointed prongsshown in Fig. S. The accurate adjustment of the die Si is an essentialfeature in this machine.

3G, the clampscrew 35 simply holding the die in the proper position.

Located within the plunger 32 is the dis chargeplunger 37. This plungerpushes the cut and swaged blank through the circular hole in the carrier30, and by this operation turns orbends the prongs 11 11 at right anglesto the head 10 into the form shown in Fig. 8. The discharge-plunger 37is connected by an arm to the plunger 3S, to which reciprocating motionis imparted by means of the cams 53) and i0, secured t0 the shaft 15. Toreduce the friction to the minimum, the cams 39 and +L@ bear against therims of the rollers 41 and 12, rotating on studs secured to the plunger3S.

The reciprocating carrier 30 is operated by means of the cam L13,secured to the end of the drivin g-shaft 15, and the lever 45, one endof which enters the way in the cam 4:3, the other end being connected bymeans of the link i-6 to the slide Li7, to which slide the reciprocatingcarrier 30 is firmly secured.

The operation of the machineis as follows: The sheet-metal ribbon 23from the spool 22 is entered in the slot or way in the plate 29. Theupper roll of the feed mechanism 21 is brought to bear on the ribbon orstock, as the sheet-metal ribbon is called, by the hand-screw shown inthe drawin The machine is new started and the feed mechanism feeds thestock under the cutter 2S, which in descending cuts the blank shown inFig. 7 and deposits the same on the carrier The convex head 10 entersthe circular hole in the carrier and holds the blank in the properposition. The carrier now moves the blank under the swaging-die Si,where" the prongs 11 11 are swaged out to the taper shown in Fig. 8. Thedischarge-plunger now descends and forces the cupped and swaged Thethrust ofthe plunger is directly on the nut blank through the circularhole `in the carrier, from whence it drops into a box or otherreceptacle. The discharge plunger now quickly rises above the carrierand the carrier returns to its first position, in which the circularhole is again under the cutter-die ready to receive the next blank andrepeat the iirst operation.

All the operations are performed c0nsecutively by one revolution of thedriving-shaft 15, the number of staples made corresliionding with thenumber of revolutions of the d ri vin gsh aft.

As the swaging and forming of the complete staple are of the greatestimportance to its use, I will again refer to the manner of swaging andforming the said staples. It will be understood that the head 10 of theblank shown in Fig. 7 is concaved by the cutterdie, which is providedwith a protuberance, and that the prongs 1]. 11 are swaged to a sharppoint at the end. \Vhen,now, the so cupped and swaged blank is forcedthrough the circular hole in the carrier, the horizontal section of theprongs on a line with the head form seetions of a circle, the innersurface being' con cave and the outer surface convex. This form of theswaged tapering prongs secures a rigidity to the same when made of verythin sheet metal that allows of driving the staples through toughleather, and also facilitates the clinching of the pointed ends, whichreadily turn inward toward each other.

llavin g thus described my invention, I claim as new and desire tosecure by Letters Iatent- 1. In a machine for making staples, thecombination, with a main driving-shaft, of a stock-feeding device, acutting-plunger provided with the convex projection, a swagingplunger, adischarge-plunger located wit-hin the swaging-plungcr, a reciprocatingcarrier provided with a circular hole and constructed to form the lowerdie for swaging the prongs, and mechanism for driving the same, asdescribed.

2. In a machine for making staples, the combination, with the plunger32, of the adjustable swaging-die 34, having the screw-nu t SSG, foradjusting the die and forreceivingthe thrust of the plunger, as and Yforthe purpose set forth. v

The combination, with the reciprocating plunger 32, of the-swaging-die34, the carrier 30, provided with a hole through which the staple isdrawn, and the discharge-plunger 37, constructed to force thestaple-blank through the hole in the carrier to bend the prongs, as andfor the purpose described.

In witness whereof I have hereunto set my hand.

WILLIAM IIALKYARD.

lVitnesses:

Josnrir A. MILLER, J. A. MILLER, J'r.

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